Begin to enable extension APIs in Extension Service Worker.

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 8918a5c763d64cc1eb6918527b673ec74590de82..415feff6ddb78678daf2892d180c8cee219108a1 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -339,12 +339,14 @@ class CONTENT_EXPORT ContentRendererClient {
   // is called from the worker thread.
   virtual void DidInitializeServiceWorkerContextOnWorkerThread(
       v8::Local<v8::Context> context,
+      int embedded_worker_id,
       const GURL& url) {}
 
   // Notifies that a service worker context will be destroyed. This function
   // is called from the worker thread.
   virtual void WillDestroyServiceWorkerContextOnWorkerThread(
       v8::Local<v8::Context> context,
+      int embedded_worker_id,
       const GURL& url) {}
 
   // Whether this renderer should enforce preferences related to the WebRTC